const oCenter = document.querySelector('.helpCenter')
const oErji = document.querySelector('.helpErji')

// 帮助中心移入移出
oCenter.onmouseover = function () {
    // console.log(1)
    oErji.style.display = 'flex'
}

oCenter.onmouseout = function () {
    // console.log(1)
    oErji.style.display = 'none'
}